Why Hair Turns Gray Is No Longer A Gray Area: Our Hair Bleaches Itself As We Grow Older
ScienceDaily (Feb. 24, 2009) — Wash away your gray? Maybe. A team of European scientists have finally solved a mystery that has perplexed humans throughout the ages: why we turn gray. Despite the notion that gray hair is a sign of wisdom, these researchers show that wisdom has nothing to do with it.
Going gray is caused by a massive build up of hydrogen peroxide due to wear and tear of our hair follicles. The peroxide winds up blocking the normal synthesis of melanin, our hair's natural pigment.